*{
    margin: 0;
    padding: 0;
}

a{
    text-decoration: none;
    color: #fff;
}

div{
    // 盒子变成css3盒子模型:盒子宽高=盒子宽+内边距+盒子边框.
    box-sizing: border-box;
}



.header_top_title a{
    display: inline-block;
    height: 50px;
    padding: 0 6px;
    margin: 0 15px;
    font-size: 16px;
    font-weight: 700;
    color: #3e4141;
    text-align: center;
    line-height: 50px;
    
}

.header_top_title a:hover{
    border-bottom: 2px solid #00a4f9;
}

ui>li{
    list-style:none;
}

.header_main_left ui>li{
    height: 45px;
    line-height: 45px;
    padding: 0 20px;
}

ui>li>a:hover{
    color: #00b5ff;
}

ui>li>a>span{
    float: right;
}

div{
    font-size: 14px;
    line-height: 50px;
    color: #656868;
}

.header_top{
    width: 1200px;
    height: 50px;
    margin: 20px auto;
    
    .header_top_logo{
        float: left;
        width: 220px;
        height: 50px;
        background: url(../images/logo.png) no-repeat center;
    }

    .header_top_title{
        float: left;
        .header_top_title_one{
            margin: 0 15px 0 80px;
        }
    }

    .header_top_search{
        float: left;
        height: 50px;
        margin-left: 80px;
        padding-top: 5px;


        .header_top_search_input{
            float: left;
            width: 340px;
            height: 38px;
            padding-left: 18px;
            border: 1px solid #00a4f9;
        }

        .header_top_search_img{
            float: left;
            width: 50px;
            height: 40px;
            background: url(../images/btn.png) no-repeat center;
        }
    
    }

    .header_top_user{
        float: left;
        width: 130px;
        height: 40px;
        margin-left: 25px;
        img{
            vertical-align: middle;
        }
    }
}

.header_center{
    height: 420px;
    background-color:#1b046b;
    
    .header_main{
        margin: auto;
        width: 1200px;
        height: 420px;
        background: url(../images/banner2.png) no-repeat ;
        
        .header_main_left{
            float: left;
            background: rgba(0,0,0,.3);
            // background: pink;
            padding: 7.5px 0;
            width: 190px;
            a:hover {
                color: #00A1FF;
            }
        }
        
        .header_main_right{
            float: right;
            width: 228px;
            height: 300px;
            margin: 60px 0;
            background-color: #fff;
            .main_right_title h2{
                height: 50px;
                background-color: #9acfea;
                color: #fff;
                text-align: center;
                font-size: 20px;
            }
            .main_right_main{
                height: 250px;
                

                ui>li{
                    padding-left: 20px;
                    height: 62px;
                    h3 {
                        height: 20px;
                        }
                    
                    p {
                        font-size: 13px;
                        color: #ababab;
                        height: 15px;
                        }
                }

                ui>li:hover {
                    color: #00A1FF;
                    h3 {
                        color: #00A1FF;
                        }
                    
                    p {
                        color: #00A1FF;
                        }
                }
    
                a{
                    width: 200px;
                    height: 40px;
                    margin: auto;
                    font-size: 16px;
                    color: #00A1FF;
                    margin-left: 12px;
                    text-align: center;
                    line-height: 40px;
                    display: inline-block;
                    border: 1px solid #00A1FF;
                }
            }

            
        }
    }
}

.header_bottom{
    width: 1200px;
    height: 60px;
    margin: 10px auto;
    margin-bottom: 35px;
    box-shadow: 0 2px 3px 3px rgba(0,0,0,0.1);

    .header_bottom_left{
        margin:0 30px;
        float: left;
        h2:hover {
            color: #00A1FF;
        }
    }
    .header_bottom_main ui>li{
        float: left;
        width: 119px;
        height: 16px;
        text-align: center;
        a{
            padding: 0 30px;
            border-left:1px solid #BFBFBF;
            font-size: 16px;
            color: #030303;
            }

        a:hover {
            color: #00A1FF;
        }
    }
    .header_bottom_right{
        float: right;
        a{
            padding-right: 25px;
            font-size: 16px;
            color: #39B7FF;
            }
    }
}

.main{
    width: 1200px;
    height: 650px;
    margin: 0 auto;

    .main_top{
        float: left;
        width: 100%;
        margin: 20px 0;
        line-height: 40px;
        h2{
            float: left;
            height: 40px;
            
        }
        a{
            height: 40px;
            font-size: 12px;
            float: right;
            color: #B6B9B9;
        }
        a:hover {
            color: #00A1FF;
        }
    }
    
    .main_bottom ui>li {
        a{
            float: left;
            position: relative;
            width: 225px;
            height: 270px;
            margin:0 15px 15px 0;
                img{
                    width: 225px;
                }
                p{
                    color: black;
                    padding-left: 20px;
                    line-height: 20px;
                }

                .main_bottom_hot{
                    width: 40px;
                    height: 25px;
                    position:absolute;
                    top: 2px;
                    right: -4px;
                    background: url(../images/hot.png) no-repeat;
                }
        }
        a:hover{
            box-shadow: 0 2px 3px 3px rgba(0,0,0,0.1);
        }
    }
}

.footer{
    width: 1200px;
    height: 420px;
    background-color: aqua;
    margin: 7px auto;
}